Automatic door tightener



March 7, 1933. BOGGS 1,900,328

AUTOMAT IC DOOR 'I'IGHTENER Filed March 8, 1952 INVENTOR.

ATTORNEYS.

ROBERT B0655 Patented Mar. 7, 1933 ROBERT BOGGS, OF DALY CITY,CALIFORNIA AUTOMATIC noon TIGHTENER,

Application filed March 8, 1932.. Serial No. 597,583.

This invention relates to improvements in automatic door tighteners.

The principal object of this invention is to provide means whereby thedoor latch will prevent the door, having myv latch attached thereto,from rattling.

A further object is to produce a device of this character which issimple in construction.

A further object is to produce a device which conforms to ordinarypractices 1n 1nstalling latches on doors.

Other objects and advantages w1ll be apparent during the course of thefollowing description.

In the accompanying drawing formlng a part of this specification and inwhich l ke numerals are employed to designate like parts throughout thesame,

Figure 1 is a cross-sectional view taken on the line 1-1 of Fig. 2,

Figure 2 is a cross-sectional view taken on the line 2-2 of Fig. 1,

Figure 3 is a front elevation of the keeper, and showing the bolt incross-section when turned in anti-rattling position,

Figure 4 is a fragmentary showing the bolt in retracted position,

Figure 5 is a plan view of the bolt,

Figure 6 is a fragmentary detail view taken on the line 6-6 of Fig. 1,and looking in the direction of the arrows, and

Figure 7 is a fragmentary perspective view of the upper end of thepusher.

The ordinary door latch is usually provided with a square bolt andenters a square opening in the keeper. In some instances, a round boltis used, and in order 40 to facilitate the entering of this bolt, eitherround or square, into the keeper opening, the

keeper opening is generally somewhat larger than the bolt. Thisv permitsthe door to rattle, which is often very annoying.

latch has a bolt, capable of turning as it is projected into the keeper,the result being detail view balance the weight of the handles 33 and toApplicant has devised a latch which may. be combined with a lock ifdesired, which,

cammingefiect, and thus securely, holding the door against rattling. g

Inthe accompanying drawing wherein for the purpose, of illustration isshown a preferred embodiment of my invention, the

numeral. 5 designates a housing which. is positionedwithin the door 6 inthe customary manner, and held in. place by a securing plate 7 thru themedium of the customary screws. At 8 I have shown a keeper plate havinga squared opening 9. The parts thus far'correspond to the ordinary latchconstruction. Within the housing 5, I pivotas at 11, a pusher 12, whichpusher has a forked end 13, one portion of the fork being-bifurcated asshown at 14 to receive the reduced portion 16 of a bolt 17 slidably heldin a block 18., This bolt has an enlarged head l9 providedwith a camsurf-ace 21-and a fiat surface 22. A groove 23 isformed in thebolt soasv to receive a stationary pin-24 carried in a block 26 secured withinthe housing. A spring 27 is attached to the housing as at 28 and to thepusher as at 29,

and serves to press the pusher against a cam 31 which is actuated bythepintle 32 of the handle 33. A spring 34 acts ,to counterassist inreturning them to their normal position."

The result of this construction is, that when the handle 33 is moved soas to rotate the pintle 32, the cam 31 will move the pusher about itspivot, thus drawing the bolt into the housing As this occurs, the pin 24riding in the slot 23 will rotate the headof the bolt from the positionshown in Figs. 1 and 3 .to the position shown in i Fig. 4. When thehandle is released, the springs 27 and 34 will return the parts to theirnormalposition, thus projecting the bolt out of the housing, and if thedoor he closed, this projection will cause the bolt to rotate in theopening 9 until it binds against the front side of the opening, and

thus holds the door pressed against the door stop and preventsrattling.It is of course obvious that if the door is closed without actuating thehandles, the cam surface 21 will move the bolt intothe housing so thatthe door may be closed, after which the bolt will then be projected intothe keeper thru the action of the spring 27 and 31.

It is to be understood that the form of my invention herewith shown anddescribed is to be taken as a preferred example of the same, and thatvarious changes relative to the material, size, shape and arrangement ofparts may be resorted to without departing from the spirit of theinvention or the scope of the subjoined claims.

Having thus described my invention, 1

claim 1. In a latch, a housing, a keeper, said keeper having an openingformed'therein, a bolt slidable in said housing, said bolt having aspiral groove formed therein, a stationary pin positioned in saidhousing and engaging said groove to cause rotation of said bolt whensaid bolt is moved with respect to said pin, said bolt being equippedwith means for engaging and causing a camming action in the opening ofsaid keeper to cause lateral displacement between said keeper and saidhousing.

2. In a latch, a housing, a keeper, said keeper having a squared openingformed therein, a bolt slidable in said housing, said bolt having a headprovided with a fiattened surface, means for rotating said bolt, saidmeans including a groove formed in said bolt, and a stationary pinmounted in said housing and engaging said groove to cause rotation ofsaid bolt when said bolt ismoved with relation to said pin, whereby saidflattened surface will cause a camming action in said squared opening ofsaid keeper to prevent lateral movement between said housing and saidkeeper.

3. Ina device of the character described, a housing, a bolt slidable insaid housing, a pusher engaging a portion of said bolt, a cam foractuating said pusher, means for holding said pusher in engagement withsaid cam, means for rotating said bolt, said bolt having an enlargedhead and a fiat surface formed thereon, a keeper, said keeper having anopening therein, the opening in said keeper being in alignment with saidbolt, whereby the flattened surface of said bolt will engage one side ofsaid opening in said keeper when said bolt is projected therethrough andwill move out of engagement therewith when said bolt is retracted.

I In testimony whereof I afiix my signature.

ROBERT BOGGS.

